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Oil to gas retrofit/ tune to max efficiency

griffinbr Member Posts: 3
edited September 18 in THE MAIN WALL
Top of the morning everyone been following Dan Holohan and I am a fan! Love hydronic’s !!..I am planning on adding a boiler buddy or buffer tank not sure if anyone has any other ideas that would be more cost effective…? but wanted to get any direction on how I can have this 300 PB purefire running most efficiently, should I change the piping to go directly off of the boiler to the indirect, like in the IBR photo?
. The delta T with just the Indirect is 30, with firing rate turned down down. Using a three speed GF circulator. Not sure if I should pipe indirect Like the photo IBR references? Any feedback would be greatly appreciated. 


    HVACNUT Member Posts: 5,247
    Why are you not using Peerless specs?
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,236
    Dude. I'm trying to eat.
  • griffinbr
    griffinbr Member Posts: 3
    edited September 18

  • griffinbr
    griffinbr Member Posts: 3
    So the manual specs have the pressure relief valve mounted on the return side for pf300 and 399*?(
    Little confusing) however, these differ from the other one *this PB pf300 is a rev2 does anyone know if that means safety relief valve should be mounted on the return side? 
  • pecmsg
    pecmsg Member Posts: 4,178
    edited September 18
    I see the TPR on the supply side!!
  • hot_rod
    hot_rod Member Posts: 19,850
    If the goal is to lower fuel cost, start with the efficiency if the structure.
    Next operate the boiler at the lowest, safest temperature.
    Short cycling kills efficiency, ODR can help with that
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream